The precedence of the operators
The precedence of the operators is a very important concept in programming in general. In fact, the order in which operators are evaluated in the evaluation of an expression (including the conditions) is very important, both in mathematics and in programming itself.
Applying it to what we have said, comparison operators take precedence over Boolean operators when evaluating a condition.
There are conditions that test what we are saying.
>>> False == False or True
True
>>> False == (False or True)
False
>>> (False == False) or True
TrueIn Python, the order of operator evaluation respects that of mathematics.
Tabella della precenza
| ** | Exponent operator |
| ∼,+,- | Complement, positive or negative numbers |
| *,/,%,// | Multiplication, division, module and rest |
| +, – | Addition, subtraction |
| >>,<< | Bitwise left and right |
| & | Bitwise AND |
| ^, | | Bitwise XOR e OR |
| <=, <, >, >= | Comparison operators |
| <>,==,!= | Equality operators |
| =, %=, /=, //=,+=, -=, *=, **= | Assignment operators |
| is, is not | Identity operators |
| in, not in | Membership operators |
| not, or, and | Logic operators |
⇐ Go to Python Lesson 2.4 – Boolean Logic
Go to Python Lesson 2.6 – The WHILE Loop ⇒